<template>
    <div>
        <!--面包屑导航区域-->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>添加商品</el-breadcrumb-item>
        </el-breadcrumb>

        <el-card>
             <!--提示区域-->
              <el-alert
                title="添加商品信息"
                type="info"
                center
                show-icon
                :closable="false"
                >
            </el-alert>

            <!--步骤条区域-->
            <el-steps :space="300" :active="activeIndex - 0" finish-status="success" align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>

            <!--tab栏区域-->
            <el-form :model="addForm" :rules="addFormRules" 
                    ref="addFormRef" 
                    label-width="100px" 
                    label-position="top"
                >
                <el-tabs v-model="activeIndex" tab-position="left" 
                        :before-leave="beforeTabLeave"
                        @tab-click="tabClicked"
                    >
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item> 
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="">
                            <el-cascader
                                expand-trigger="hover"
                                v-model="addForm.goods_cat"
                                :options="cateList"
                                :props="cateProps"
                                @change="handleChange"></el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                             <!--复选框组-->
                             <el-checkbox-group v-model="item.attr_vals">
                                <el-checkbox border v-for="(cb,i) in item.attr_vals" :key="i" :label="cb"></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item v-for="item in onlyTableData" :key="item.attr_id" :label="item.attr_name">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <!--action表示图片要上传的后端地址-->
                        <el-upload
                            :action="uploadURL"
                            :on-preview="handlePreview"
                            :on-remove="handleRemove" 
                            :headers="headerObj"
                            on-success="handleSuccess"
                            list-type="picture">
                            <el-button size="small" type="primary">点击上传</el-button>
                            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <!--富文本编辑器组件-->
                        <quill-editor
                            ref="myQuillEditor"
                            v-model="addForm.goods_introduce"
                            :options="editorOption"
                            @blur="onEditorBlur($event)"
                            @focus="onEditorFocus($event)"
                            @ready="onEditorReady($event)"
                        />

                        <!--添加商品的按钮-->
                        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
                    </el-tab-pane>
                </el-tabs>
            </el-form>
        </el-card>

        <!--图片预览-->
        <el-dialog
            title="图片预览"
            :visible.sync="previewVisible"
            width="50%">
            <img :src="previewPath" alt="" class="previewImg"/>
        </el-dialog>
    </div>
</template>

<script>
import _ from 'lodash'

export default {
    data(){
        return {
            //图片预览对话框
            previewVisible:false,
            //预览图片的url路径
            previewPath:'',
            //图片上传组件的headers请求头对象
            headerObj:{
                Authorization:window.sessionStorage.getItem('token')
            },
            uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
            //动态参数列表数据
            manyTableData:[],
            //静态参数列表数据
            onlyTableData:[],
            //级联关系
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            //商品分类列表
            cateList:[],
            activeIndex:'0',
            //添加商品的表单数据对象
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                //商品所属的分类数组
                goods_cat:[],
                //图片的数组
                pics:[],
                //商品的详情描述
                goods_introduce:'',
                attrs:[]
            },
            //添加商品的表单验证规则
            addFormRules:{
                goods_name:[
                    {require:true,message:'请输入商品名称',trigger:'blur'}
                ],
                goods_price:[
                     {require:true,message:'请输入商品价格',trigger:'blur'}
                ],
                goods_weight:[
                     {require:true,message:'请输入商品重量',trigger:'blur'}
                ],
                goods_number:[
                     {require:true,message:'请输入商品重量',trigger:'blur'}
                ],
                goods_cat:[
                     {require:true,message:'请输入商品分类',trigger:'blur'}
                ]
            }
        }
    },
    created(){
        this.getCateList()
    },
    methods:{
        async add(){
            //首先进行表单的预验证
            this.$refs.addFormRef.validate(valid => {
                if(!valid){
                    return this.$message.error('请填写必要的表单项')
                }

                //执行添加的业务逻辑
                //对数组进行深拷贝,lodash
                const form = _.cloneDeep(this.addForm)
                form.goods_cat = form.goods_cat.join(',')

                //处理动态参数
                this.manyTableData.forEach(item => {
                    const newInfo = {
                        attr_id:item.attr_id,
                        attr_value:item.attr_vals.join(',')
                    }
                    this.addForm.attrs.push(newInfo)
                })

                //处理静态属性
                this.onlyTableData.forEach(item => {
                    const newInfo = {
                        attr_id:item.attr_id,
                        attr_value:item.attr_vals.join(',')
                    }
                    this.addForm.attrs.push(newInfo)
                })

                form.attrs = this.addForm.attrs

                //发请http，提交表单对象
                // const {data,res} = await this.$http.post('goods',form)
                // if(res.meta.status !== 201){
                //     return this.$message.error('添加商品失败')
                // }
                this.$message.success('添加商品成功')
                this.$router.push('/goods')
            })
        },
        //监听图片上传成功的事件
        handleSuccess(response){
            //拼接得到一个图片信息对象
            const picInfo = {pic:response.data.tmp_path}
            //将图片信息对象，push到pics数组中
            this.addForm.pics.push(picInfo)
        },
        //处理移除图片的操作
        handleRemove(file){
            //1.获取将要删除的图片的临时路径
            const filePath = file.response.data.tmp_path
            //2.从pics数组中，找到这个图片对应的索引值
            const i = this.addForm.pics.findIndex(x => x.pic === filePath)
            //3.调用数组的splice方法，把图片信息对象，从pics数组中移除
            this.addForm.pics.splice(i,1)
        },
        //处理图片预览效果
        handlePreview(file){
            this.previewPath = file.response.data.url
            this.previewVisible = true
        },
        async tabClicked(){
            //证明访问的是动态参数面板
            if(this.activeIndex === '1'){
                //发起请求获取数据
                // const {data,res} = await this.$http.get('categories/${this.cated}/attributes',params:{
                //     sel:'many'
                // })
                // if(res.meta.status !== 200){
                //     this.$message.error('获取动态参数列表失败')
                // }
                //this.manyTableData = res.data

                this.manyTableData = [
                    {
                        attr_id:1,
                        attr_name:'版式',
                        attr_vals:'高清4K,曲面屏 人工智能'
                    },
                    {
                        attr_id:1,
                        attr_name:'颜色',
                        attr_vals:'黄色 白色 黑色 红色'
                    }
                ]

                //将字符串变成数组
                this.manyTableData.forEach(item => {
                    item.attr_vals = item.attr_vals.length === 0 ? []:item.attr_vals.split(' ')
                })
            }else if(this.activeIndex === '2'){
                //发起请求获取数据
                // const {data,res} = await this.$http.get('categories/${this.cated}/attributes',params:{
                //     sel:'only'
                // })
                // if(res.meta.status !== 200){
                //     this.$message.error('获取动态参数列表失败')
                // }
                //this.onlyTableData = res.data

                this.onlyTableData = [
                    {
                        attr_id:1,
                        attr_name:'主体-商品名称',
                        attr_vals:'55寸高清'
                    },
                    {
                        attr_id:2,
                        attr_name:'显示-曲面',
                        attr_vals:'是'
                    },
                    {
                        attr_id:3,
                        attr_name:'系统-智能电视',
                        attr_vals:'是'
                    },
                    {
                        attr_id:4,
                        attr_name:'外观-壁挂安装',
                        attr_vals:'是'
                    },
                    {
                        attr_id:5,
                        attr_name:'功耗-整机功率',
                        attr_vals:'3.2GHZ'
                    },
                    {
                        attr_id:6,
                        attr_name:'端口-模拟RF接口',
                        attr_vals:'是'
                    },
                ]

            }
        },
        beforeTabLeave(activeName, oldActiveName){
            if(oldActiveName === '0' && this.addForm.goods_cat.length !== 3){
                this.$message.error('请先选择商品分类')
                return false
            }
        },
        //级联选择器选中变化，会触发这个函数
        handleChange(){
            if(this.addForm.goods_cat.length !== 3){
                this.addForm.goods_cat = []
            }
        },
        //获取所有商品分类数据
        async getCateList(){
            //发送http请求获取数据
            // const {data,res} = await this.$http.get('categories')
            // if(res.meta.status !== 200){
            //     return this.$message.error('获取商品分类数据失败')
            // }

            // this.cateList = res.data
            this.cateList = [
                 {
                    "cat_id":1,
                    "cat_name":"大家电",
                    "cat_pid":0,
                    "cat_level":0,
                    "cat_deleted":false,
                    "children":[
                        {
                            "cat_id":3,
                            "cat_name":"电视",
                            "cat_pid":1,
                            "cat_level":1,
                            "cat_deleted":false,
                            "children":[
                                {
                                    "cat_id":6,
                                    "cat_name":"曲面电视",
                                    "cat_pid":3,
                                    "cat_level":2,
                                    "cat_deleted":true
                                },
                                 {
                                    "cat_id":7,
                                    "cat_name":"高清4K",
                                    "cat_pid":3,
                                    "cat_level":2,
                                    "cat_deleted":true
                                }
                            ]
                        }
                    ]
                }
            ]
        }
    },
    computed:{
        cated(){
            if(this.addForm.goods_cat.length === 3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    }
}
</script>


<style lang="less" scoped>
    .el-checkbox{
        margin: 0 15px 0 0 !important;
    }

    .previewImg{
        width:100%
    }

    .btnAdd{
        margin-top: 65px;
    }
</style>